RE: NA OW? (RE: spectral sensitivity of platinum/palladium and cyanotype coatings.)

Well, in chemfinder.com it is "coded" as following: Na2O4W. Should be
clear that it's Sodium Tungstate in either coding methods (since we're
referring to it in the 'Ziatype printing' context).

Regards,
Loris.

-----Original Message-----
From: Eric Neilsen [mailto:e.neilsen@worldnet.att.net]
Sent: 22 Şubat 2006 Çarşamba 21:29
To: alt-photo-process-l@sask.usask.ca
Subject: RE: NA OW? (RE: spectral sensitivity of platinum/palladium and
cyanotype coatings.)

Looking it up it is written Na2WO4 . 2H2O

Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
214-827-8301
http://ericneilsenphotography.com
 
Skype : ejprinter
> -----Original Message-----
> From: Eric Neilsen [mailto:e.neilsen@worldnet.att.net]
> Sent: Wednesday, February 22, 2006 1:11 PM
> To: alt-photo-process-l@sask.usask.ca
> Subject: RE: NA OW? (RE: spectral sensitivity of platinum/palladium
> and cyanotype coatings.)
>
> I had another symbol in my mind for Tungsten. Thanks.
>
> Eric Neilsen Photography
> 4101 Commerce Street
> Suite 9
> Dallas, TX 75226
> http://e.neilsen.home.att.net http://ericneilsenphotography.com
>
> > -----Original Message-----
> > From: Loris Medici [mailto:mail@loris.medici.name]
> > Sent: Wednesday, February 22, 2006 2:50 AM
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: RE: NA OW? (RE: spectral sensitivity of
> platinum/palladium and
> > cyanotype coatings.)
> >
> > NaOW is Sodium Tungstate. it's purpuse is to lower contrast
> of the Ziatype
> > emulsion and warm the neutral black image color (LiPd alone
> gives neutral
> > -
> > almost coldish black). I sometimes use 10 drops AFO + 10
> drops LiPd + 3
> > drops NaOW - this gives a very warm image color and a pretty
> low contrast
> > emulsion (but very open shadows).
> >
> > Regards,
> > Loris.
> >
> > -----Original Message-----
> > From: Eric Neilsen [mailto:e.neilsen@worldnet.att.net]
> > Sent: 22 Şubat 2006 Çarşamba 01:26
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: NA OW? (RE: spectral sensitivity of
> platinum/palladium and
> > cyanotype coatings.)
> >
> > Loris, I am not familiar with NaOW. What is it and at what
> concentration
> > are
> > you using it?
> >
> > Eric Neilsen Photography
> > 4101 Commerce Street, Suite 9
> > Dallas, TX 75226
> > 214-827-8301
> > http://ericneilsenphotography.com
> >
> > Skype : ejprinter
Received on Thu Feb 23 02:22:46 2006